#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <uv.h>

uv_loop_t* loop;
uv_tty_t tty;
uv_timer_t tick;
uv_write_t write_req;
int width, height;
int pos = 0;
char* message = "  Hello TTY  ";

void update(uv_timer_t* req) {
  (void)req;
  char data[500];

  uv_buf_t buf;
  buf.base = data;
  buf.len = sprintf(
      data, "\033[2J\033[H\033[%dB\033[%luC\033[42;37m%s", pos, (unsigned long)(width - strlen(message)) / 2, message);
  uv_write(&write_req, (uv_stream_t*)&tty, &buf, 1, NULL);

  pos++;
  if (pos > height) {
    uv_tty_reset_mode();
    uv_timer_stop(&tick);
  }
}

int main() {
  loop = uv_default_loop();

  uv_tty_init(loop, &tty, STDOUT_FILENO, 0);
  uv_tty_set_mode(&tty, 0);

  if (uv_tty_get_winsize(&tty, &width, &height)) {
    fprintf(stderr, "Could not get TTY information\n");
    uv_tty_reset_mode();
    return 1;
  }

  fprintf(stderr, "Width %d, height %d\n", width, height);
  uv_timer_init(loop, &tick);
  uv_timer_start(&tick, update, 200, 200);
  return uv_run(loop, UV_RUN_DEFAULT);
}
